. Bulletin. ame as in figure 30. namely. 1 pervious anode, 39 compound pervious electrodes, and 1simple pervious cathode. There being only two electric connectionsto be made, any intervening compound pervious electrode can beremoved and replaced as often as convenient without interruptingthe current. If the simple pervious cathode at the end is to be re-moved, an uncharged one can be placed in front of it and connectedwith the negative pole, when the other can be removed from thecircuit. A direct-current service of 220 volts has been used, but Ido not recommend so high a voltage, on the whole,
. Bulletin. ame as in figure 30. namely. 1 pervious anode, 39 compound pervious electrodes, and 1simple pervious cathode. There being only two electric connectionsto be made, any intervening compound pervious electrode can beremoved and replaced as often as convenient without interruptingthe current. If the simple pervious cathode at the end is to be re-moved, an uncharged one can be placed in front of it and connectedwith the negative pole, when the other can be removed from thecircuit. A direct-current service of 220 volts has been used, but Ido not recommend so high a voltage, on the whole, on account ofthe inconvenience to those working at the deposition box. It is,however, easy to protect ones self from shocks by wearing rubber-soled shoes, or, if necessary, rubber gloves. The 110-volt currentgives no inconvenience without protection. A patent (U. S. patent883170. Mar. -A. 1908) was granted me for the electrodes hereindi scribed, and further details may be found in the claims there BUREAU OF BULLETIN 150 PLATE II
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